It doesn't go directly against physics, but more in a... Roundabout way. It might be possible IRL, for example, but if it is, we haven't found what we need to do it with yet (see: [url]https://en.wikipedia.org/wiki/Negative_mass[/url], [url]https://en.wikipedia.org/wiki/Alcubierre_drive[/url]). I won't be upset if you decide to go against it still, since it's logical to. That power isn't essential to my planned character, just something I find immensely cool.